Set of castle building blocks

ABSTRACT

A set of castle building blocks comprising a plurality of brick units, city wall units, cylinder units, tower units, and connection units. All of the units excluded the connection units have at least two blind holes. Each connection unit includes a rod section and a head section connected with each other. The rod section inserts into the corresponding blind hole. The head section detachably inserts into the blind hole of one of the units excluded the connection units. A plurality of convex arc portions is inclined and extended upwardly and outwardly from the rod section axially. The head section includes a main body, a hollow portion, and a concave groove. The concave groove of the connection unit is arranged so that the main body of the head section has a space to elastically insert into the blind hole of other unit excluded the connection units.

FIELD OF THE INVENTION

The present invention relates to a toy, and more particularly to a set of castle building blocks.

BACKGROUND OF THE INVENTION

The structure of the conventional building blocks is that a post is extended from a top surface of a main body upwardly and a blind hole is formed at a bottom surface of the main body so that the post of one main body may assemble to the blind hole of other main body.

According to above mentioned structure, if one wants to assemble or build a castle with the conventional building blocks, the shape of each main body is single and less change. The structure after assembling or building is not strong enough and easy to be crashed.

In view of the foregoing circumstances, the inventor has invested a lot of time to study the relevant knowledge, compare the pros and cons, research and develop related products. After quite many expetireents and tests, the “set of castle building blocks” of this invention is eventually launched to improve the foregoing shortcomings, to meet the public use.

SUMMARY OF THE INVENTION

An object of this invention is providing a set of castle building blocks. The arrangement of the connection units may make the rod section insert into the blind hole of one of the units excluded the connection units and the exposed head section may detachably insert into the blind hole of other units excluded the connection units so as to assemble or build a castle. The concave groove of the connection unit is arranged so that the main body of the head section has the space to elastically insert into the blind hole of other unit excluded the connection units. Furthermore, due to the arrangement the convex hook portion of the connection unit, the friction between of the head section and an inner side wall of the corresponding blind hole may be increased to tightly fasten after the head section inserts into the blind hole of other unit excluded the connection units.

To achieve above objects, a set of castle building blocks may at least comprising a plurality of brick units, a plurality of city wall units, a plurality of cylinder units, a plurality of tower units, and a plurality of connection units, all of the units excluded the connection units have at least two blind holes, one of the at least two blind holes is provided one of the connection units to insert and fasten and the other one thereof is provided the connection unit which is fastened to other units to detachably insert and fasten, wherein: each connection unit includes a rod section and a head section, a top end of the rod section is connected to the head section, the rod section inserts into the corresponding blind hole, the head section detachably inserts into the blind hole of one of the units excluded the connection units, a plurality of convex arc portions is inclined and extended upwardly and outwardly from the rod section axially, the head section includes a main body, a hollow portion, and a concave groove, the hollow portion passes through a center of the main body, the concave groove is concavely formed at the main body and extended from one end of the main body opposite to the rod section toward the rod section and fluidly communicated with the hollow portion, and a convex hook portion is formed downwardly and outwardly at a peripheral of a part of the main body opposite to the rod section.

In some embodiments, a front side and a rear side of the rod section respectively form a flat portion, and the convex arc portions are axially formed at a left side and a right side of the rod section.

In some embodiments, each brick unit is cube with six surfaces, the blind hole is formed at a center of each surface, a front side surface, a rear side surface, a left side surface, and a right side surface of each brick unit form a longitudinal concave groove respectively, and each longitudinal concave groove is fluidly communicated with the corresponding blind hole of the same brick unit.

In some embodiments, each city wall unit includes a wall body and two protruding portions, the two protruding portions are respectively extended from lower sides of two sides of the wall body outwardly, one end of each protruding portion opposite to the wall body has the blind hole, each connection unit inserts into the corresponding blind hole, and each protruding portion is embedded into corresponding longitudinal concave groove of other brick unit.

In some embodiments, a top surface and a bottom surface of each cylinder unit form the blind hole respectively, and the blind hole of the top surface of each cylinder unit is provided the rod section of the connection unit to insert.

In some embodiments, a bottom surface of each tower unit forms the blind hole.

The set of castle building blocks may further comprise at least one arch unit which includes a door body and two projection portions, the two projection portions are respectively extended outwardly from lower ends of two sides of the door body, the blind hole is formed at one side of each projection portion opposite to the door body, each blind hole is inserted by corresponding connection unit, and each projection portion may embed into corresponding longitudinal concave groove of other brick unit.

The set of castle building blocks may further comprise at least one underbrush unit which includes an underbrush body, one side of the underbrush body is a vertical side, the blind hole is formed at a lower end of the vertical side, the blind hole is provided the corresponding connection unit to insert, the vertical side may embed into the corresponding longitudinal concave groove of other brick unit.

Further features and advantages of the present invention will become apparent to those of skill in the art in view of the detailed description of preferred embodiments which follows, when considered together with the attached drawings and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

All the objects, advantages, and novel features of the invention will become more apparent from the following detailed descriptions when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of a set of castle building blocks of the present invention.

FIG. 2 is a partial perspective view of the set of castle building blocks of the present invention.

FIG. 3 is a partial exploded view of FIG. 2.

FIG. 4 is a cross-sectional view of FIG. 2.

FIG. 5 is a perspective view of the city wall units of the set of castle building blocks of the present invention.

FIG. 6 is an exploded view of the city wall units of the set of castle building blocks of the present invention.

FIG. 7 is a perspective view of the brick units of the set of castle building blocks of the present invention.

FIG. 8 is an exploded view of the brick units of the set of castle building blocks of the present invention.

FIG. 9 is a perspective view of the connection units of the set of castle building blocks of the present invention.

FIG. 10 is a side view of the connection units of the set of castle building blocks of the present invention.

FIG. 11 is a cross-sectional view of FIG. 10 along line A-A.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring now to the drawings where like characteristics and features among the various figures are denoted by like reference characters.

Please refer to FIGS. 1 to 11, a set of castle building blocks 100 may comprise a plurality of brick units 1, a plurality of city wall units 2, a plurality of cylinder units 3, a plurality of tower units 4, and a plurality of connection units 5.

All of the above mentioned units 1˜4 has at least two blind holes 200. One of the at least two blind holes 200 is provided one of the connection units 5 to insert and fasten and the other one thereof is provided the connection unit 5 which is fastened to other units 1˜4 to detachably insert and fasten.

Each connection unit 5 includes a rod section 51 and a head section 52. A top end of the rod section 51 is connected to the head section 2. The rod section 51 may insert into the corresponding blind hole 200. The head section 52 may detachably insert into the blind hole 200 of one of the units 1˜4. The head portion 52 is exposed to the blind hole 200 of the units 1˜4 excluded the connection units. A plurality of convex arc portions 53 is inclined and extended upwardly and outwardly from the rod section 51 axially. The head section 52 includes a main body 521, a hollow portion 522, and a concave groove 523. The hollow portion 22 may pass through a center of the main body 521. The concave groove 523 is concavely formed at the main body 521 and extended from one end of the main body 521 opposite to the rod section 51 toward the rod section 51 and fluidly communicated with the hollow portion 522. A convex hook portion 524 is formed downwardly and outwardly at a peripheral of a part of the main body 521 opposite to the rod section 51.

The above mentioned rod section 51 may be coated with glue first and then insert into the corresponding blind hole 200.

Due to the arrangement of the concave groove 523, a space may be defined in the main body 521 of the head section 52 so that the head portion 52 may insert into the corresponding blind hole 200 of other units 1˜4.

Each brick unit 1 may be cube with six surfaces. The blind hole 200 is formed at a center of each surface of the cubic brick unit 1. A front side surface, a rear side surface, a left side surface, and a right side surface of each brick unit 1 may form a longitudinal concave groove 11 respectively. Each longitudinal concave groove 11 is fluidly communicated with the corresponding blind hole 200 of the same brick unit 1.

In addition, each brick unit 1 may be cylinder (shown as in FIG. 1). That is, the shape of each brick unit 1 may be modified according to the user's demands.

Each city wall unit 2 includes a wall body 21 and two protruding portions 22. The two protruding portions 22 are respectively extended from lower sides of two sides of the wall body 21 outwardly. One end of each protruding portion 22 opposite to the wall body 21 has the blind hole 200. Each connection unit 5 may insert into the corresponding blind hole 200. Each protruding portion 22 may embed into corresponding longitudinal concave groove 11 of other brick unit 1 so as to provide a space which is defined between the brick unit 1 and the corresponding city wall unit 2 to receive one of the cylinder units 3.

If the thickness of each city wall units 2 is thinner, a front side and a rear side of the rod section 51 may form a flat portion 54 respectively. The convex arc portions 53 may be axially formed at a left side and a right side of the rod section 51 (shown as in FIGS. 9˜11).

A top surface and a bottom surface of each cylinder unit 3 may form the blind hole 200 respectively. The blind hole 200 of the top surface of each cylinder unit 3 is provided the rod section 51 of the connection unit 5 to insert.

A bottom surface of each tower unit 4 forms the blind hole 200 so as to provide the head section 52 of the connection unit 5 which is inserted into the top surface of the cylinder unit 3 to insert.

The set of castle building blocks 100 of the present invention may further comprise at least one arch unit 6 which includes a door body 61 and two projection portions 62. The two projection portions 62 are respectively extended outwardly from lower ends of two sides of the door body 61. The blind hole 200 is formed at one side of each projection portion 62 opposite to the door body 61. Each blind hole 200 is inserted by corresponding connection unit 5. Each projection portion 62 may embed into corresponding longitudinal concave groove 11 of other brick unit 1.

The set of castle building blocks 100 of the present invention may further comprise at least one underbrush unit 7 which includes an underbrush body 71. One side of the underbrush body 71 is a vertical side 72. The blind hole 200 is formed at a lower end of the vertical side 72. The blind hole 200 is provided the corresponding connection unit 5 to insert. The vertical side 2 may embed into the corresponding longitudinal concave groove 11 of other brick unit 1.

Therefore according to above mentioned structure, the arrangement of the connection units 5 may make the rod section 51 insert into the blind hole 200 of one of the units 1˜4 excluded the connection units 5 and the exposed head section 52 may detachably insert into the blind hole 200 of other units 1˜4 excluded the connection units 5 so as to assemble or build a castle (shown as in FIG. 1). The concave groove 523 of the connection unit 5 is arranged so that the main body 521 of the head section 52 has the space to elastically insert into the blind hole 200 of other unit 1˜4 excluded the connection units 5. Furthermore, due to the arrangement the convex hook portion 524 of the connection unit 5, the friction between of the head section 52 and an inner side wall of the corresponding blind hole 200 may be increased to tightly fasten after the head section 52 inserts into the blind hole 200 of other unit 1˜4 excluded the connection units 5.

The foregoing descriptions are merely the exemplified embodiments of the present invention, where the scope of the claim of the present invention is not intended to be limited by the embodiments. Any equivalent embodiments or modifications without departing from the spirit and scope of the present invention are therefore intended to be embraced.

The disclosed structure of the invention has not appeared in the prior art and features efficacy better than the prior structure which is construed to be a novel and creative invention, thereby filing the present application herein subject to the patent law. 

What is claimed is:
 1. A set of castle building blocks, at least comprising a plurality of brick units, a plurality of city wall units, a plurality of cylinder units, a plurality of tower units, and a plurality of connection units, all of the units excluded the connection units have at least two blind holes, one of the at least two blind holes is provided one of the connection units to insert and fasten and the other one thereof is provided the connection unit which is fastened to other units to detachably insert and fasten, wherein: each connection unit includes a rod section and a head section, a top end of the rod section is connected to the head section, the rod section inserts into the corresponding blind hole, the head section detachably inserts into the blind hole of one of the units excluded the connection units, a plurality of convex arc portions is inclined and extended upwardly and outwardly from the rod section axially, the head section includes a main body, a hollow portion, and a concave groove, the hollow portion passes through a center of the main body, the concave groove is concavely formed at the main body and extended from one end of the main body opposite to the rod section toward the rod section and fluidly communicated with the hollow portion, and a convex hook portion is formed downwardly and outwardly at a peripheral of a part of the main body opposite to the rod section.
 2. The set of castle building blocks as claimed in claim 1, wherein a front side and a rear side of the rod section respectively form a flat portion, and the convex arc portions are axially formed at a left side and a right side of the rod section.
 3. The set of castle building blocks as claimed in claim 1, wherein each brick unit is cube with six surfaces, the blind hole is formed at a center of each surface, a front side surface, a rear side surface, a left side surface, and a right side surface of each brick unit form a longitudinal concave groove respectively, and each longitudinal concave groove is fluidly communicated with the corresponding blind hole of the same brick unit.
 4. The set of castle building blocks as claimed in claim 3, wherein each city wall unit includes a wall body and two protruding portions, the two protruding portions are respectively extended from lower sides of two sides of the wall body outwardly, one end of each protruding portion opposite to the wall body has the blind hole, each connection unit inserts into the corresponding blind hole, and each protruding portion is embedded into corresponding longitudinal concave groove of other brick unit.
 5. The set of castle building blocks as claimed in claim 3, wherein a top surface and a bottom surface of each cylinder unit form the blind hole respectively, and the blind hole of the top surface of each cylinder unit is provided the rod section of the connection unit to insert.
 6. The set of castle building blocks as claimed in claim 1, wherein a bottom surface of each tower unit forms the blind hole.
 7. The set of castle building blocks as claimed in claim 3, further comprising at least one arch unit which includes a door body and two projection portions, the two projection portions are respectively extended outwardly from lower ends of two sides of the door body, the blind hole is formed at one side of each projection portion opposite to the door body, each blind hole is inserted by corresponding connection unit, and each projection portion may embed into corresponding longitudinal concave groove of other brick unit.
 8. The set of castle building blocks as claimed in claim 3, further comprising at least one underbrush unit which includes an underbrush body, one side of the underbrush body is a vertical side, the blind hole is formed at a lower end of the vertical side, the blind hole is provided the corresponding connection unit to insert, the vertical side may embed into the corresponding longitudinal concave groove of other brick unit. 